Paying board to my parents right now - I pay £30 per week and they cover all bills. I offered to pay an actually even share of the household bills rather than a reduced rate in the name of fairness, since that'd still be cheaper than renting, but my mum wouldn't let me.
I'm hoping to move out in the future, but only once I've a) saved up more of an initial deposit because I don't want a big mortgage and renting is more expensive in the long run, and b) I've identified some people I could live with as housemates to cut the cost (whether romantic partner(s) or just good platonic friends). I'm emotionally attached to my local village and nearby areas, in which house prices start from around £130,000 for an area I'd actually want to live in, last I checked. So if I had 1 friend, I would only need £65,000 to pay for my share, and if I had 2 friends, I'd only need £40,000-£45,000, etc. Then, aside from a mortgage, the ongoing cost of bills would be cheaper, because if I was sharing with friends we'd be splitting them, and also because I am more eco-friendly than my parents and would choose eco-friendly friends to live with, plus the house would be smaller and have less council tax, so the overall bill would be lower anyway.